Search function integration with already existing site

Hello I need a search function coded that can search through information in an excel or a database that can be updated by uploading an excel sheet. It will search through mobile models and retrieve some information and a picture. These models and their amount(ie. x1, x2 etc) must be able to add to a list, and then add other personal information with the list and send it to the website admin. I want this reasonable priced and of high quality. Website already exists, and I will give examples of the function.